A company has a large photo library stored on Amazon S3. They use AWS Lambda to extract metadata from the files according to various processing rules for different categories of photo. The output is then stored in an Amazon DynamoDB table. The extraction process is performed whenever customer requests are submitted and can take up to 60 minutes to complete. The company wants to reduce the time taken to extract the metadata and has split the single Lambda function into separate Lambda functions for each category of photo. Which additional steps should the Solutions Architect take to meet the requirements?